Malicious PDF — malware analysis report

Static analysis result for SHA-256 978a24c3318f7422…

MALICIOUS

PDF

42.8 KB Created: 2020-08-08 17:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa9bc691a293936626fcebb11296d234 SHA-1: 8f2899dc034f58115ebefde96378f9e9ed166a05 SHA-256: 978a24c3318f7422133237fafb47dbd032659e9b026544f61aab7e7aaa15ae95
234 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to redirector infrastructure like 'ttraff.com', suggesting a link farm or phishing lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' confirm the malicious intent of these links. The presence of 'powershell_output_to_excel.pdf' in the document text, although not directly executable, hints at potential command execution, possibly via embedded scripts or exploits. The ML classifier strongly indicates maliciousness.

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/wb?keyword=plan%20de%20unidad%20didactica%20pdf In PDF document text
    • http://luxibilez.bestdealvacations.com/uploads/1/3/0/7/130776485/3207019.pdfIn PDF document text
    • http://files.berrow-society.org/uploads/1/3/1/0/131070379/pafeleg.pdfIn PDF document text
    • http://files.sbdumpsterrental.com/uploads/1/3/2/8/132814182/9553869.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/1/0437/7395/2158/files/ken_blanchard_raving_fans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/cantina_rooftop_nyc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2744/8476/files/16554616082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4311/9527/files/ripanafuzesave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37278413385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7765/4935/files/black_sabbath_war_pigs_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/vopibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9055/8620/files/44879207106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1161/9491/files/rajide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/duladazomip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/87026268393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/85367092097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4588/6884/files/algebra_and_number_theory_anna_university_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/powershell_output_to_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8565/files/94585905152.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_off000068e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E6 4876 bytes
SHA-256: 45d40a52abd65c01f329a01d6889a383170dc7992ee7223648d0fbe9d08890dd
font_01_sfnt_off0000799b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799B 10788 bytes
SHA-256: df716792a24a6e426b7633b80550b4180abf47f108b9fbfa7b7ec01ff3258b18