Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3fb8563631c64a4…

MALICIOUS

PDF

33.7 KB Created: 2020-08-21 01:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d5620d26625764ebf10564d4a62b7f9 SHA-1: d469386bbb7af9e5186e674965d7abc9d62a1b4e SHA-256: b3fb8563631c64a45cabcefb41fb3a8431a0de28c0d7c62f2393281d8d74606a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at `https://ttraff.cc/pify?keyword=interview+form+malaysia`. This redirector is likely used to funnel victims to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to improve SEO for malicious content. 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.cc/pify?keyword=interview+form+malaysia In PDF document text
    • http://files.chloe-bee.com/uploads/1/3/0/8/130874416/5218016.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/1/0431/5008/2202/files/fifopizamefugav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/80031282780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1966/3517/files/aday_retmen_snav_kitab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/neroxefizugozinetag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/59528345357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/9478/5445/files/luxenomirozoronalurerodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5838/7349/files/giramobakigoxepuketidoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/lareribiramiridesegibejin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4238/1725/files/ffxiv_grip_killifish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5391/5043/files/al_qaeda_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/rovidatizitusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/riwazenu.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 3

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_off000048aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48AA 5104 bytes
SHA-256: fec84ae5688b343987d639d977c73c286a1ca79dd58f24ea204859164d38c3a5
font_01_sfnt_off00005a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A04 9508 bytes
SHA-256: 272f9eb8d650c0d1b6546089e1b6f98adece3ef1a44e1c8c361564db00b1694c

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