Malicious PDF — malware analysis report

Static analysis result for SHA-256 da77566c0d60d77d…

MALICIOUS

PDF

41.8 KB Created: 2020-08-18 20:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46ebdf5b00a02590a0f1881ccab1829d SHA-1: 7e957015352637966e8faee8bd55235f6af8b8b1 SHA-256: da77566c0d60d77d6c3774e974cfc144d0ea08d3b45f027f740a5b0eabba42a7
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=b.+ed+scholarship+form+online+last+date'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, a heuristic for a PDF link farm was triggered, with numerous external links, many hosted on Shopify. While some Shopify links are confirmed benign, the presence of the malicious redirector suggests a phishing or malware distribution attempt.

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.cc/pify?keyword=b.+ed+scholarship+form+online+last+date In PDF document text
    • http://sokuba.thewellnesstraininginstitute.com/uploads/1/3/1/6/131606617/rebuzajewira.pdfIn PDF document text
    • http://files.livingdemocracy.info/uploads/1/3/2/8/132814071/5549987.pdfIn PDF document text
    • http://files.wao-lb.com/uploads/1/3/1/3/131379356/9642608.pdfIn PDF document text
    • http://files.m2students.net/uploads/1/3/1/4/131407469/rilef_niwevugugifadev.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/1/0434/7153/6285/files/bulajarezonutobomolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1813/3405/files/l_honntet_radicale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/buzejorokutozanaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6909/3541/files/reddit_com_hearthstone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2882/4742/files/lazifumuveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/black_dog_guitar_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5565/0718/files/bufolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/lotupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/87924763844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/quizlet_premium_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8343/9003/files/atex_directive_1999_92_ec.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/basic_guitar_chords_finger_placement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/wuvogamababobomeper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/22672008533.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654E 5476 bytes
SHA-256: 22890167a072ff7bd12864bb16ee66fabb74342e20b7c3e344a311db3d063703
font_01_sfnt_off000077c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C6 10116 bytes
SHA-256: f59f500916aadcd22498eda32eef19d8fa86a2906ee8ee25a0b9c36595df63d8