Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dec463e07754566…

MALICIOUS

PDF

43.2 KB Created: 2020-08-24 00:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db5964f6a5da7b5359d82fd4f829607c SHA-1: 252e66f3c5656eeb2c762279ed3899ceef8bf0bf SHA-256: 8dec463e0775456622ec9ee1dd29351a69b76ca10d1523850ea7fa6a1de37e58
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a lure for an 'Awards for all application form 2019' and embeds numerous links. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=awards+for+all+application+form+2019'. The ML classifier also strongly flagged this PDF as malicious. The document body itself is heavily obfuscated but contains the same URLs, suggesting the primary intent is to redirect the user to malicious sites.

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=awards+for+all+application+form+2019 In PDF document text
    • http://files.collieinspections.com/uploads/1/3/1/1/131164310/voxizezosogef-zewokuwuvimeli-jakanisaku-dusumuwujikem.pdfIn PDF document text
    • http://baduvov.jacquelinecutler.com/uploads/1/3/0/8/130814229/76e426f43da.pdfIn PDF document text
    • http://files.meganfmccormick.com/uploads/1/3/1/4/131438843/zutolazogomolovaned.pdfIn PDF document text
    • http://files.theplastereddragon.com/uploads/1/3/0/8/130874163/3aa72.pdfIn PDF document text
    • http://files.bellafiorelagottos.com/uploads/1/3/0/7/130776542/3dec942c4ab251.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/1/0433/7264/2460/files/9319295202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5589/6990/files/29824261654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/4e_manual_of_the_planes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9580/0475/files/wotafikenisokoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/14879351600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2849/6036/files/97265062211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/contoh_skripsi_akuntansi_keperilakuan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/22202175420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/woduxubafaxuredefat.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_off000069c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C1 5864 bytes
SHA-256: d779d8aaa42c878dc6c14ab376a357b67950ff96b69aa3fc9f35a817374585e5
font_01_sfnt_off00007db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB5 10120 bytes
SHA-256: f048e653694c4986a61d52d226d85577c9618115a7ee166911f4fd5fe2bef758

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