Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1391bfd857072f…

MALICIOUS

PDF

43.2 KB Created: 2020-07-26 03:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: f96b8e746ad36ff60e2a034473f2c1ae SHA-1: 6c80d9814bfb2590e084a979226d4e948ef2969b SHA-256: 7e1391bfd857072f1f4139bf92d7d160265d2f2fe525c03bad102c4c8e81b9c5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external PDFs, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/wb?keyword=strategi%20pemasaran%20umkm%20pdf'. This suggests the document is part of a link farm or SEO manipulation scheme, potentially leading to phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=strategi%20pemasaran%20umkm%20pdf In PDF document text
    • http://files.michellemorrisonwrites.com/uploads/1/3/0/8/130815137/xizevenib.pdfIn PDF document text
    • http://files.scottwardart.com/uploads/1/3/1/8/131871690/rukupasamexa.pdfIn PDF document text
    • http://files.mayidesign.co.uk/uploads/1/3/1/6/131637177/nazinagusum-pifogit-pixosisib.pdfIn PDF document text
    • http://files.life-mdinc.org/uploads/1/3/2/7/132712093/1987969.pdfIn PDF document text
    • http://files.sistainthebrotherhood.com/uploads/1/3/1/1/131164076/b4fbc3be17385f1.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/1/0428/9835/8432/files/45927795399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/sudukapujade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6376/9243/files/petefiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1887/1207/files/tobaxupanegemezopuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/fezamowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6893/8658/files/nanavobiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/binikexuvipizobud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1778/files/dukiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/20600227644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/robimosaromifalotoroj.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFE 5268 bytes
SHA-256: 0928ad1f9a0ce80197243530fff1105fb000c49041cd9cadd46fafa090dc2746
font_01_sfnt_off00007fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC7 9344 bytes
SHA-256: 25f736a8f3ed7a832afcac13c2a8e44644ef718ae269d5665255dc13a9d34191

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