Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab905d8d3e8bea74…

MALICIOUS

PDF

65.9 KB Created: 2020-08-03 17:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 848d00937a79155f9a8f2cbe81f8b634 SHA-1: 8d4bd51ebc6440465dd427bd7928edbaaba2d50d SHA-256: ab905d8d3e8bea74216f76054ea06b5f96a3b7fd3d4bec7a3c0a3e81460c02a8
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=alternating+current+circuits+4th+edition+solution+pdf'. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting other PDFs. No scripts were extracted from this sample.

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=alternating+current+circuits+4th+edition+solution+pdf In PDF document text
    • http://tewelida.krystalfood4thought.com/uploads/1/3/0/7/130738779/namuwikuvunuxa_demix_pobefadateribe_loneraxeluxe.pdfIn PDF document text
    • http://files.adjectivenewmusic.com/uploads/1/3/0/7/130776393/8311490.pdfIn PDF document text
    • http://files.enloearts.org/uploads/1/3/0/9/130969704/nurumu.pdfIn PDF document text
    • http://files.flowershowflowers.com/uploads/1/3/1/3/131383727/46407cb.pdfIn PDF document text
    • http://files.diogenpro.com/uploads/1/3/0/7/130775528/lapolarevobukofofux.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/1/0433/0687/7080/files/1568204463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0827/files/bitimuxari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1774/0199/files/9625272167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/wimivuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1667/5740/files/80461495354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2870/1603/files/wugegetefakewagenubikuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/bivijagepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/lawidokowasojewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/77257557305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/lajobepexoxosujusitimid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE6E 5492 bytes
SHA-256: 4ac3303f267362df9e6b9ee6390fb73bc58fd3a759b72466aee90b630b3f769c
font_01_sfnt_off0000c122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC122 10380 bytes
SHA-256: cc6488854a6e2a31a28b9adb63cf3904d65692f6fc91369f65ce215d997d746e
font_02_sfnt_off0000e4be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BE 16088 bytes
SHA-256: c487aa01613208473e3c0b892de3260687b9c0341624d6c76d95d7849508583e