Malicious PDF — malware analysis report

Static analysis result for SHA-256 347385c0110c1f31…

MALICIOUS

PDF

46.0 KB Created: 2020-08-10 03:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4925dce5170b40246c9dbff60b498d2 SHA-1: 77ed53cae6112fa70b710c8e952b12006a5afc08 SHA-256: 347385c0110c1f31227f2f2d6e422d88a0747f32d03f68ec2a0b06b7e6587ef1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though partially corrupted, contains keywords related to 'Energias renovables libros pdf' and the malicious URL, reinforcing the lure.

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=energias+renovables+libros+pdf In PDF document text
    • http://files.lrse-nd.org/uploads/1/3/1/4/131436956/b4bfac965.pdfIn PDF document text
    • http://files.seyabookfest.com/uploads/1/3/1/4/131437676/7710110.pdfIn PDF document text
    • http://wanipil.fastparcel.net/uploads/1/3/0/8/130814328/babomisilo_vebibasitibum_lakagiduxip.pdfIn PDF document text
    • http://files.easttexasplacenta.com/uploads/1/3/1/3/131384071/tefurukelinav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/wuwimedojawibegajuluzix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/disazexudaborubazeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0754/8326/files/32082563726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7801/6421/files/36596479089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/how_to_make_friends_and_influence_people.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/jufugisubogijepakazaxap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lapifobojupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4483/8303/files/larevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/54486599038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/sofanimipinenen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/kevimerobo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B4 5072 bytes
SHA-256: 184d2ac276d296e5ff1a133b76935daa39b5dadf57399f856107423b21b7ec1a
font_01_sfnt_off000076fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FC 11260 bytes
SHA-256: c5c0c70275e3f453a03fd090a2256f66323328ff08ff24bdc699ce5cacfb702a
font_02_sfnt_off00009b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B88 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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