Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a491d7aa4742df7…

MALICIOUS

PDF

41.0 KB Created: 2020-08-05 14:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8e549988bb57c728ae6b13fc1a79299 SHA-1: a6e13def83b13850897b624ec2e57d91df98b22a SHA-256: 1a491d7aa4742df71e6edbf403b6c2a61c8a81e9a732052b52acc668db5ff2c4
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link to ttraff.com, which is a known malicious infrastructure. It also features a link farm of 15 PDFs hosted on Shopify, likely for SEO poisoning or to obscure the malicious redirector. The document body, though partially garbled, contains the malicious URL and a call-to-action phrase, suggesting a social engineering lure.

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.
  • 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.
  • 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.com/pify?keyword=ph%25E1%25BA%25A7n+m%25E1%25BB%2581m+chuy%25E1%25BB%2583n+t%25E1%25BB%25AB+file+pdf+sang+file+%25E1%25BA%25A3nh In PDF document text
    • http://files.drinkgreatteamarketplace.com/uploads/1/3/2/6/132695574/2786406.pdfIn PDF document text
    • http://files.glsgroupllc.com/uploads/1/3/0/7/130775387/riwesirilizif.pdfIn PDF document text
    • http://files.guyinspired.com/uploads/1/3/2/6/132682966/sijepumiv_xukogoruka_xobanorokonulod.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/1/0434/3991/5164/files/68165319990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0396/9689/files/rojamuforusasopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/47035516890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/fally_ipupa_instagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/1836472017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9346/4990/files/65410432220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/46193383153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8348/9690/files/34713679517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/90383412926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/buxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4839/4142/files/json_to_yaml.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7612/files/xumavosogobinujoxu.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_off00005c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C88 6636 bytes
SHA-256: 16e1b86c896db9198f5de78e4ebff99860a89b217fb133149d4af0b0b4cb18c1
font_01_sfnt_off00007128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7128 11220 bytes
SHA-256: 93e2802fe90ec837ac2553099afd61c818713ab8a179591da92c77d97d516c57

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