Malicious PDF — malware analysis report

Static analysis result for SHA-256 cac89a71629c042a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 12:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 500ef5cf15f443549136e48d77644589 SHA-1: 482938a2f9eccfda0f752844d03fc5438032ea80 SHA-256: cac89a71629c042a0ab9116b2ef0c20690beac42061d0396d4da81cafb65fdde
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=best+android+spy+apps+cheating+spouse', which is likely used to redirect users to malicious content or scams. The document body, though heavily obfuscated, contains this URL, reinforcing its role in the attack. The presence of numerous other links, many hosted on Shopify, suggests a link farm designed to obscure the malicious destination.

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=best+android+spy+apps+cheating+spouse In PDF document text
    • http://vuvodotu.alzheimersdiseasethebrand.com/uploads/1/3/2/6/132696030/2467553.pdfIn PDF document text
    • http://files.dialoguecoffeehouse.com/uploads/1/3/2/7/132740682/27f50828315.pdfIn PDF document text
    • http://goduz.oikstrategy.com/uploads/1/3/1/4/131453133/8469737.pdfIn PDF document text
    • http://files.virginiashowmasterscircuit.com/uploads/1/3/0/7/130775970/2702494.pdfIn PDF document text
    • http://noximerer.ims-spi.com/uploads/1/3/1/4/131406390/9709751.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/1/0431/7344/5788/files/27644931376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/group_incentive_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/exercices_corrigs_automatisme_industriel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/free_math_worksheets_for_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/vumusuzenefit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/free_archeology_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9162/3074/files/model_attestation_de_travail_word_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8437/2386/files/sample_variance_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8125/2507/files/ludowemesixapidasoded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/petofikimawivudefexifevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8852/files/romigaxaxovutin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/najazobebarikanu.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_off00006c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9E 5452 bytes
SHA-256: f389077aef3bcc8b0de1a48bb0ab102c20b655d0c06ea3144feec8dcea62c098
font_01_sfnt_off00007f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F27 9888 bytes
SHA-256: 174224759b92ac6f76cba5e328ddf538c28314030ff718ea04041f5cc9cf6ffe