Malicious PDF — malware analysis report

Static analysis result for SHA-256 936e3144f30d4c53…

MALICIOUS

PDF

50.7 KB Created: 2020-08-17 02:37:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50414f52712bbf7d43d883f2fa612407 SHA-1: 84d53524ba855f16e4ebd1ccfd2198d05f2f4f43 SHA-256: 936e3144f30d4c532d744d055d67c97178fc419bb917c242459d964ed353e483
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=careplus+authorization+form+pdf'. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a 'careplus authorization form'. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to distribute 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=careplus+authorization+form+pdf In PDF document text
    • http://files.ayamcemani.co.uk/uploads/1/3/2/6/132683484/abc5dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/woduduzul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/surgical_asepsis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/psychological_perspectives.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/milaxemimanakesibujebod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4178/1920/files/243625727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9291/6886/files/luzilopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0414/8381/files/26919651689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1694/8633/files/vcds_12._12_rus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/adafruit_motor_shield_v1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/21486180988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/subnautica_charge_batteries.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000780c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x780C 5236 bytes
SHA-256: 8f2afee7aafda630b8ca862e4594249ec8bc22b2636827560030b2418b2c7a84
font_01_sfnt_off000089ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BA 11524 bytes
SHA-256: f52f50990909cdb156e917883dceb412b9fde8f3f9c578cc35a0b5ee1b1c1560
font_02_sfnt_off0000b00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB00C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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