Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a023e3a0633a9c4…

MALICIOUS

PDF

155.8 KB Created: 2020-07-27 23:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fbdf68c75938364d13f8ff154de810c SHA-1: a21e34d4644aabb08c43d0ea5d45150911ee3841 SHA-256: 1a023e3a0633a9c4d0228aaae971cf97e777e7c2a74697ad712a23df7c3d37ff
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating a malicious redirector link to ttraff.com. The document body, though heavily obfuscated, contains text that appears to be a song title and application metadata, suggesting a lure. The primary IOC is the malicious URL identified by the heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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.
  • 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.com/pify?keyword=lagu+apink+i%2527+m+so+sick+instrumental In PDF document text
    • http://files.hthncwatershed.org/uploads/1/3/2/6/132680808/minipijopokimebawezo.pdfIn PDF document text
    • http://files.theformulatulsa.com/uploads/1/3/1/3/131384604/tebijez_logasojufam_jenaz_sadabug.pdfIn PDF document text
    • http://files.backonyourfeetmassage.com/uploads/1/3/1/3/131380024/litepobevimedu.pdfIn PDF document text
    • http://files.fremontfloristshop.com/uploads/1/3/1/3/131380305/7836135.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/1/0433/6241/8847/files/munuwetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/44473021047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/19033470518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/serozelaropa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4870/files/guredarurigomanewow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/nejetoliw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/dudobejuvaxepekakoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/pokigesigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/71572389395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/18496739676.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000183a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x183A1 57412 bytes
SHA-256: 91d6f560231d0c56b714f0e99b38bd88a4dc1533383468457970802c0e754ea8
font_01_sfnt_off000224c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x224C4 5172 bytes
SHA-256: b6313b7d730121b6d075ad67e04985a4e53a5434aad166660065ad11101f84f1
font_02_sfnt_off0002364f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2364F 13136 bytes
SHA-256: 2199efd8eefed82e78994878417ee7fb4b3b7f3b08ecf8817635e36dc3d57a37

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