Malicious PDF — malware analysis report

Static analysis result for SHA-256 4abd62989e97fc6e…

MALICIOUS

PDF

42.0 KB Created: 2020-08-28 01:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96d809707802fd7d2064ca176fca03f0 SHA-1: 1fecebe795090671fc75af03d0624eb3b3f2f242 SHA-256: 4abd62989e97fc6e4127d69fae1600e20a49b35f59ea00c8a3b69725c0a7ecc2
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a utility for converting images to PDFs. The document body, though heavily obfuscated, contains the URL "https://ttraff.me/pify?keyword=a-pdf+image+to+pdf+key", which is flagged as a known malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to benign Shopify domains but are likely used to mask the malicious intent. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.me/pify?keyword=a-pdf+image+to+pdf+key In PDF document text
    • http://lexedo.hardawayart.com/uploads/1/3/0/8/130873995/4668603.pdfIn PDF document text
    • http://fofitud.walshinthecloud.com/uploads/1/3/1/3/131383483/sejusisofara.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/1/0434/6416/3490/files/groin_pain_stretches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/punepilekevinotatof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7637/files/cotton_eyed_joe_banjo_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/koruximub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9170/6263/files/75871072124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/muzafoxupekeguku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/gewizija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/jerupadosomogot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/98220287007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/tubipamem.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 2

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_off00006571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6571 5240 bytes
SHA-256: 9fab9ebfe1c0a275eaa87bcc85fb187ce2ecb5609af45e7edf6379fc36e6eb53
font_01_sfnt_off00007755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7755 10592 bytes
SHA-256: 9c992c46953cfe744906371d9a23817fbf172d875315df1005d356201fad0f77

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