Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e49e12c44f09298…

MALICIOUS

PDF

40.6 KB Created: 2020-10-16 07:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7694fde825af1b97dbcdfee24b89cbdf SHA-1: f3f30222fbd0a4cd1cfb068736a47c4eef5c6ede SHA-256: 0e49e12c44f09298c97cae1d228d732e2159ae59cc80e7a07c88d6eecf857eeb
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'declaracion de importacion dian pdf' and a URL that appears to be a lure. The presence of many external PDF links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/pify?keyword=declaracion+de+importacion+dian+pdf In PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/4255750.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3808383.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f88b16edcb12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370063/normal_5f890be2a3dde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369141/normal_5f88047f628aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_5f876ba9abcbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5f881fbd30866.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f88d520ca502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_5f891bab3fc57.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/dirajiguluwisi.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/tunitulo.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/ba8edfd9257b.pdfIn PDF document text
    • https://nakumupapetiz.weebly.com/uploads/1/3/2/7/132741615/zajitufiwako.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/1/0431/5529/2321/files/72467452573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1518/4295/files/77892578283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3908/7514/files/37207145200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/rigby_star_guided_reading_books_ks2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/vosif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3500/2533/files/runescape_the_brink_of_extinction_quick_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7472/6309/files/virginia_age_of_consent_for_mental_health_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7565/6097/files/small_world_learning_center_littleton_co.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_off00005ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECD 5124 bytes
SHA-256: 1582ec62299621989bdea8eef74cfd82795df67a45edcd973f82ba0c7927fd3f
font_01_sfnt_off0000701e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701E 10956 bytes
SHA-256: f8eb0f5c62b9da9fc84cf38a60c6f70a84e746a916e2d562570d6d8767770e1b

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