Malicious PDF — malware analysis report

Static analysis result for SHA-256 13aba6aa7e89caa0…

MALICIOUS

PDF

76.3 KB Created: 2020-08-08 22:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88e8633e527b0c7e164b085c0d9e1482 SHA-1: 7d8008a3a6f8d2d9fe2e82440832f39716efaaa0 SHA-256: 13aba6aa7e89caa04207667925b1df1e83113ed82f8f0b74d2c8236fdaacf76c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as a "link farm" for SEO purposes, but many redirect to malicious infrastructure. Specifically, the link https://ttraff.ru/pify?keyword=oster+bread+machine+manual+pdf is identified as a malicious redirector. This suggests the document is part of a phishing or scam campaign aiming to direct users to potentially harmful content. No scripts were extracted, but the embedded links and PDF structure strongly indicate malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=oster+bread+machine+manual+pdf In PDF document text
    • http://semoteba.thepariseffect.net/uploads/1/3/1/0/131070420/jokopobab.pdfIn PDF document text
    • http://files.knelstrom.com/uploads/1/3/0/7/130740211/kilesonupidiguwazeb.pdfIn PDF document text
    • http://files.widhalmcustomhomes.com/uploads/1/3/0/9/130969436/matadix-jadipedutuliwek.pdfIn PDF document text
    • http://files.drstackhouse.com/uploads/1/3/1/4/131406412/8611566.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/1/0428/6421/4175/files/6110752004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9145/1294/files/88844184435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1701/8267/files/bujamogufenelipofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7962/2040/files/81893384845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/28582247954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/56648938869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6905/3854/files/avesta_holy_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/72267185035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/kimimonunilumeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/final_fantasy_7_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/78663886594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/efectos_adversos_de_los_aminoglucosidos.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF8 24840 bytes
SHA-256: 6550bab12ab1cc6d8d06ac004fec350a5605c005afdbbf5d360237eef934402b
font_01_sfnt_off0000ca3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3C 5560 bytes
SHA-256: beca8477c5cfa9296d2741951ad917e10e461255071aac3be4d0311a29bd5e1c
font_02_sfnt_off0000dcf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF5 14416 bytes
SHA-256: 605bec7fecc360d3d0ddb3e756d80c04290a8d574299525280c6c9a447c738ad
font_03_sfnt_off00010a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A12 17464 bytes
SHA-256: b355482eedaa8f12f901e8f1fc1eebbc92382ec59e518a47bfdb8a8563635439