Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a1d96d39a6eeb4d…

MALICIOUS

PDF

42.7 KB Created: 2020-08-23 23:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5babd812d44e0eb31f4d67107997db2e SHA-1: edf8bb5c40684a28f3ec9dce06cc02d6d7517f16 SHA-256: 7a1d96d39a6eeb4d342959139a34afb424b4370e9281e6b1d8ea4e67dc83873b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) known for malicious activity. The document body, though obfuscated, includes the URL 'https://ttraff.com/pify?keyword=addition+table+1-+10+worksheet', suggesting a lure to a malicious site disguised as a worksheet. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to redirect users to potentially harmful content.

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.com/pify?keyword=addition+table+1-+10+worksheet In PDF document text
    • http://files.thediscoverypoint.com/uploads/1/3/0/7/130776158/3082624.pdfIn PDF document text
    • http://files.briannaholt.com/uploads/1/3/1/6/131636769/jefaturelav-fuwexanino-zotarutozimosib.pdfIn PDF document text
    • http://revago.lapen.org/uploads/1/3/1/0/131070487/7a441e10b745a.pdfIn PDF document text
    • http://files.jenniferbmoore.com/uploads/1/3/1/6/131637484/5677090.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/1/0431/2884/8538/files/sutowasibuzepajavuvanukin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8598/6982/files/charlie_puth_attention_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/universal_studios_japan_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/53732336429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/pipinijibidumeduzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/alexandria_moulding_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/rusogupeneno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0378/8960/files/roblox_generator_no_or_survey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/niroxoliviluvabunilujub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4314/4359/files/60341292027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/3312580505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/oaths_affidavits_and_statutory_declarations_act_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/joxodofekoduxadubig.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_off0000684d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684D 5424 bytes
SHA-256: 307639866db34542aeb99510a4188dda74845544f952905aa2c458789f9104a6
font_01_sfnt_off00007ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD1 10132 bytes
SHA-256: 2ebe4a8b658500af901cdb4bb0819b3ce700e7aff196e7bc87384287dbf50470

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