Malicious PDF — malware analysis report

Static analysis result for SHA-256 221d9f962c793c6d…

MALICIOUS

PDF

73.4 KB Created: 2020-08-19 02:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7c2e3871418a7a90d6434242860642a SHA-1: f88ab16286105fc81528806352d8ccbed6458f52 SHA-256: 221d9f962c793c6d4e2c476742914b8c8ade950f20be3d2aaba17eb606524caa
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

This PDF document contains a mass of external links, masquerading as an apartment lease form. One of the primary links, 'https://ttraff.cc/pify?keyword=apartment+lease+form+chicago', is identified as a malicious redirector. The document also exhibits urgency language, further encouraging user interaction with the malicious links. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=apartment+lease+form+chicago In PDF document text
    • http://files.thedailydelaney.com/uploads/1/3/1/4/131453251/xatimemabiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9811/6006/files/wallpaper_city_guide_berlin_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/mitchell_flat_rate_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/32562290759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/65083525260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1903/2984/files/bahubali_2_songs_naa_paata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/cognitive_behaviour_therapy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/wixovoporebob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9937/3214/files/kejol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/cch_chuyn_sang_file_hnh_nh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9507/files/33318142128.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D2 5208 bytes
SHA-256: 5c75e9ef7a9b510464af8949f77dece7e25f203d8ae165fc97bec6bbae18d34d
font_01_sfnt_off0000e74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74F 10336 bytes
SHA-256: 13f8364d08541ff18637cb5443e87a4e5d8509cc18be969476ab107e21777a4b
font_02_sfnt_off00010ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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