Malicious PDF — malware analysis report

Static analysis result for SHA-256 414f67849083602a…

MALICIOUS

PDF

38.1 KB Created: 2020-08-09 16:44:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a99869aa5ac44ea76c9a1ac48a664d43 SHA-1: 36e4970fdd08289f687e70dae93b326ed62cc2d3 SHA-256: 414f67849083602a929c289ac0cd51e18886c32ca3fa285f9b4072c9c260d44e
202 Risk Score

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=ankush+lamba+di+pdf In PDF document text
    • http://files.shamanicpathandpractice.com/uploads/1/3/2/6/132695354/guxare-wumuzunafapo.pdfIn PDF document text
    • http://files.amandatriplett.com/uploads/1/3/2/6/132681296/lanes_pateronuduxever_sugunutukaf.pdfIn PDF document text
    • http://files.sisterjane.org/uploads/1/3/2/7/132740329/bemapojemagato_tisenerifevibug.pdfIn PDF document text
    • http://files.megbrajkovich.com/uploads/1/3/2/6/132681767/5665233.pdfIn PDF document text
    • http://loxuban.kathrynevans.net/uploads/1/3/1/0/131071252/8568865.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/1/0435/7767/1843/files/car_air_conditioner_wiring_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/60245588250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/vozokisifoziro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9944/5664/files/wordpress_multisite_htaccess.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/xubaziroriduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/loxesamipifixowuvedifexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/adobe_flash_cs5._5_serial_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1924/5467/files/26068613164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4704/9621/files/cantares_mexicanos_miguel_leon_portilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/95883373072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9966/9151/files/66741219968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/dinejigeguketal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/11537038644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/92691328675.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_off000050c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50C0 5380 bytes
SHA-256: 7c30f60476a1e15ccb4805546420ca9a7759e6a29fe5691c26a60385b66756ab
font_01_sfnt_off000062e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E5 12760 bytes
SHA-256: 5960e1851e3263ed91c601eab20628a0d35b3103c664915130cd040a0e98d912