Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2be021656a3241f…

MALICIOUS

PDF

42.0 KB Created: 2020-08-14 17:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbfe93d1ba1adee5ac08be1dbf5683d2 SHA-1: 821d463f32cbc30a9fd3698d7b0f5cc12f861910 SHA-256: a2be021656a3241fda2ff3b46ac4eb172244df434c338b8cb76be2b1fe5400bf
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The presence of a 'download button' heuristic and the embedded URL in the document body suggest a social engineering lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=hiv+testing+guidelines+naco, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=hiv+testing+guidelines+naco In PDF document text
    • http://dafutus.noteworthyministries.org/uploads/1/3/2/7/132712207/tutelupurujalu.pdfIn PDF document text
    • http://files.mrtranhistory.com/uploads/1/3/1/6/131606128/tapewomikurodufu.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/1/0436/6758/7225/files/casida_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/bipokakovoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2265/4362/files/45384683836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/latasoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3123/1649/files/periboxokobimuzakosemij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/vedipurirapori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/wiromonogumazudixafubusom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/83760121767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7074/8827/files/dowopovosusanabugojezosex.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_off0000668b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668B 5032 bytes
SHA-256: effe32969852db6cdb97be3fc26428102095beb384a0b1747d46a23acd9249c7
font_01_sfnt_off000077b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B3 10340 bytes
SHA-256: 4d793602c47722ed826d643d86eb122b1aced60515dbe7285ffc688c19def695

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