Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e7463804f01830…

MALICIOUS

PDF

39.6 KB Created: 2020-10-31 12:14:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7516af94d77807d75ee7611ab28d2baf SHA-1: 28fdaad6def1072f24cf0cd142837a72ffe21040 SHA-256: b8e7463804f018302c3aaa751882bd966c615e8cba54835dc631927e95abd22c
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, specifically pointing to `https://ttraff.com/pify?keyword=legendary+scroll+promo+code+summoners+war+ios`. This URL is likely used to redirect users to a phishing or malware distribution site. The presence of numerous links, including one to a PDF named `shell_script_tutorialspoint.pdf`, suggests an attempt to manipulate search engine results or distribute further 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=legendary+scroll+promo+code+summoners+war+ios In PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/pafotudatarepekuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393752/normal_5f8ea3cb49a6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417998/normal_5f9649b239a9d.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/xarukimogula_bejodoluwi_loxuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_5f9ae54900096.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bejideba/shell_script_tutorialspoint.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/wivotuzukavugubet.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/scdc_inmate_search_broad_river.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/rujijoterovufajanigiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/rankers_classes_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/plano_turistico_almeria.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/21510003823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/3170/8072/files/riromefopavobajitivizezo.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_off00005c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C14 5528 bytes
SHA-256: 2e956138cc16ea94c30b3addcaa000fa470c6611fb06f9ac95536c681f36caee
font_01_sfnt_off00006ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF1 10208 bytes
SHA-256: 46bd7241afed270aef474363ca687ca18157f6b323b0ad16bb69b8ad47c1b85a