Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01151b21542b992…

MALICIOUS

PDF

34.4 KB Created: 2020-08-13 05:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0dafc76d6078fa2e2aa2b5a30f2e733c SHA-1: 8fbad6c75410290494769acacb0e05f7b512a7fe SHA-256: b01151b21542b992898e63c742adced4b91f538123cf4971663c97c6f23d0ffb
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the text 'Twin lens reflex camera manual' and the malicious redirector URL, suggesting a lure to trick users into clicking the link. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=twin%20lens%20reflex%20camera%20manual In PDF document text
    • http://files.calcoastalhorserescue.com/uploads/1/3/1/4/131412558/sivoto.pdfIn PDF document text
    • http://files.ericaveryartist.com/uploads/1/3/0/7/130775867/jedaxixabaxeza-kubazo-xikoz-fegonetazowuseg.pdfIn PDF document text
    • http://files.energyharmonybalance.com/uploads/1/3/1/4/131483097/nokamow.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/1/0428/2135/3635/files/vulopumefudalezeseliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/56096657202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/tagob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4864/0413/files/vaziburelijumizudesiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/approach_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/wowaledoribodigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/majedofejarakisomulod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/operatoria_dental_barrancos_5ta_edicion_descargar_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9257/3336/files/amazon_in_2020_case_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4005/5208/files/pukolef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4023/files/human_anatomy_marieb_free.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 5

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_off00004745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4745 5136 bytes
SHA-256: 2bc1e2ea4b12b6b7dcc8cc2124812a7ffaf2dced3b879fc0014772ecda44746c
font_01_sfnt_off000058ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58AD 10744 bytes
SHA-256: d5bc368abb5da8ae36fbdc0436b2aa114aaf094d14cfb95569e9f6392f5dfd9f

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