Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ac1db159b31352…

MALICIOUS

PDF

42.4 KB Created: 2020-08-20 23:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36ed17a2cf59d55504cee34397963e03 SHA-1: 23c4067418bc3b6502c9f4e2aa5e4f5d652e1953 SHA-256: 12ac1db159b31352cd2d9bb4217705f4e0dc32fbe74bf63b35ece830157baa6c
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service that ultimately leads to malicious content. The document body and heuristics indicate a link farm strategy, likely for phishing or malware distribution, using the pretext of free downloads. The primary malicious IOC is the redirector URL, which is used to obscure the final 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.ru/pify?keyword=badnaamiyan+song+mp4++pagalworld In PDF document text
    • http://files.pagesofmypinkdiary.com/uploads/1/3/1/4/131437561/jisibiluwab.pdfIn PDF document text
    • http://files.hofeichan.com/uploads/1/3/2/6/132682892/budetemamulupok_lofabobapuginup_jukagiw_lajatuvuvax.pdfIn PDF document text
    • http://kirabiguf.lyriquedance.com/uploads/1/3/1/0/131069839/maloziwibadinuf.pdfIn PDF document text
    • http://files.aplacecalledroam.com/uploads/1/3/2/7/132710748/361792.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/1/0431/9209/0784/files/14292242382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/blue_planet_project_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0583/files/rojufapovavilasere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7222/3387/files/pdf_adirondack_chair_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/b_forman_park_pultneyville.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83390791822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2930/6263/files/53705108664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5210/5881/files/luwikikelofosupexora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/biology_paper_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/gigujipofinozujaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/71133924933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3617/1688/files/collocations_with_make.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7400/1825/files/forakubadofidan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0482/8580/files/network_security_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/catia_ka_full_form.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_off00005a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7C 5608 bytes
SHA-256: ea1ced79b1a3d56acaf51d0f324173f6e494ccfe23364b60a567ecc33d77d72f
font_01_sfnt_off00006d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9C 14140 bytes
SHA-256: bb0df2cb607828355c97839c99b37734d471aebc030deb611c3c4e1f0ca16f85