Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef6a0a27b9e41fa…

MALICIOUS

PDF

42.4 KB Created: 2020-08-19 17:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 958f6144e05abbbb2b42892773f76931 SHA-1: ce3842e191111183d993bd8171915183f58be55d SHA-256: cef6a0a27b9e41fa29d3832fc202da7eecc1bb1d6104fe43cd4ce96217ac9965
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, a technique often used to create link farms for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented with a lure for 'Pandora plus apk'. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of many external links, including those hosted on cdn.shopify.com, suggests a broad attempt to distribute malicious content.

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.com/pify?keyword=pandora+plus+apk In PDF document text
    • http://batenimev.jeffcomorotary.org/uploads/1/3/1/6/131637881/3d6aea1eb93.pdfIn PDF document text
    • http://files.chicosierra.com/uploads/1/3/1/1/131164043/jajowawuvur_wupisok_zonuxapuxo_lexezegusibaju.pdfIn PDF document text
    • http://files.portraitpetmuse.com/uploads/1/3/1/4/131437655/7e32a81c39e03b.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/1/0431/0423/9770/files/sariromed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/ditavoxadefafexikugerafif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9357/3284/files/zojuribijozololizova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0541/1481/files/physical_and_cognitive_development_in_adolescence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/tirewoxadafepuzofok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/gotasisudaxilab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4618/2822/files/75640814716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/customer_centricity_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/bufuxawikoligel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/wajatujemari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8126/9401/files/bivanojefisod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/augmented_reality_ieee_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/weather_report_hyderabad_next_week.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/76190371218.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_off00006848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6848 5016 bytes
SHA-256: 61ee7cee51490c1b1c037780f7f02d37da8e593dfa3d9b68af6c86b16a3045db
font_01_sfnt_off00007962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7962 10380 bytes
SHA-256: 6ac3088f18073e8964bbf576fff6cca278bd15b7953ea8ab297d96106576379e