Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b53648a84055deb…

MALICIOUS

PDF

46.3 KB Created: 2020-08-16 10:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3ab8152a520defe039a9f1ef0a33557 SHA-1: 7ecef2fcfb6f36abfd5c5aada826c7dd344575ec SHA-256: 6b53648a84055debe5515f6f68e409a74d4d8bbe833b40aad9aceae0037f7058
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, many pointing to what appears to be SEO-optimized content farms or redirectors, such as 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Bteup date sheet 2019 even semester exam' and includes URLs that are likely part of a phishing or malware distribution scheme. The presence of a malicious redirector link and the ML classifier's high confidence score indicate a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=bteup+date+sheet+2019+even+semester+exam In PDF document text
    • http://telareje.kelseyelizabethphoto.com/uploads/1/3/1/1/131164250/noxinon.pdfIn PDF document text
    • http://files.dancetothink.com/uploads/1/3/0/7/130775653/dofasazozok-rujexatuxeduz-gonunimezowevi.pdfIn PDF document text
    • http://nikawuso.myanimaltags.com/uploads/1/3/0/7/130775422/likifuzag.pdfIn PDF document text
    • http://genoven.triplem.ca/uploads/1/3/0/7/130738902/7163684.pdfIn PDF document text
    • http://goteti.fergusmassagetherapy.com/uploads/1/3/1/8/131857445/zonufixuxupoxuw-fexez-podasebazemamem-pegulaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/diy_laptop_stand.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/26935486634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/midusovivaredikesimozuzem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8149/7766/files/vidupimefud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2805/files/rasoviratisenozitol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigemeziguvego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8332/4822/files/curl_post_example_json.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/84366324276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/dizugetatumarunoxaxere.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/deontology_ethics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/82855580149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/piwenaretul.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://cdn.shopify.com/s/files/1In macro / runtime command snippet
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC6 5824 bytes
SHA-256: b53a2c6811c7a7724152783ac6b1529126902adfd8547614bf70daf91f961b3f
font_01_sfnt_off00008174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8174 13480 bytes
SHA-256: 0eedd2e05bf92c39e42d9bfe7df484e3c49075b2464c1a80f8db26cd2c76bcc6

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