Malicious PDF — malware analysis report

Static analysis result for SHA-256 888d368ef595d7b9…

MALICIOUS

PDF

45.1 KB Created: 2020-08-19 11:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46bbffaca527e69baa47c15f1887619c SHA-1: 833a20b004bc8d739d44ef180a664dac95ca1ac4 SHA-256: 888d368ef595d7b9c3383d30381db05a1f6e3e2f25dce93d1586a9a0fd0f0f9c
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector URL (https://ttraff.ru/pify?keyword=bkash+app++now). The document body also contains the same lure text and URL, suggesting an attempt to trick users into clicking the malicious link. The presence of many external PDF links, some pointing to benign Shopify URLs and others to unknown domains, indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.ru/pify?keyword=bkash+app++now In PDF document text
    • http://files.elizabethzevin.com/uploads/1/3/0/9/130969632/kasezazedaji.pdfIn PDF document text
    • http://files.bombalastreetsurgery.com/uploads/1/3/2/7/132740249/tokorutasa-belulubana-zarulovogu-xajumaputaruxok.pdfIn PDF document text
    • http://files.letspaintarabic.com/uploads/1/3/1/3/131379612/22ab9b14a11.pdfIn PDF document text
    • http://files.wakefieldperformingarts.com/uploads/1/3/1/4/131437423/b65388ebed.pdfIn PDF document text
    • http://pusasevu.thescisquad.com/uploads/1/3/0/8/130813325/dogedatuvogogerawo.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/1/0433/3420/5590/files/american_airlines_receipt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5320/3102/files/62612641698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/picture_frame_design_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6971/0241/files/wedding_march_easy_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9484/3293/files/jasper_reports_tutorial_beginners_eclipse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/gulowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9595/files/18778501225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/givumamilobakosazozejarat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9825/0146/files/bishop_horntail_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/5720/3611/files/error_handling_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/diwilenowasumaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/68698288199.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 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_off000074ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CA 4984 bytes
SHA-256: 90006c71f843af79826ec708541501d36e03bf4bcfc461b15ecc8f96501d7575
font_01_sfnt_off000085cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CD 9896 bytes
SHA-256: 43d77f3dbeca715e9796f34c3e785f344d01838f4b27301fd409b7d78f4335a0

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