Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ec16bc01e395e5…

MALICIOUS

PDF

53.2 KB Created: 2020-09-20 04:23:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61605c70cdd77968b0fb6f1aaa63c88e SHA-1: 33b52adc8cd605b65948100f4813a44180cc547e SHA-256: d5ec16bc01e395e543f257a29b6fb0cdfaf89ff92e20e7b25595899c3e712a15
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL designed to lure users with a keyword-based search. The document body, though heavily obfuscated, contains the same URL and appears to be a poorly rendered document. The presence of a large number of embedded links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to increase visibility and traffic to the malicious redirector.

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.me/wix?keyword=army+jrotc+cadet+uniform+guide In PDF document text
    • http://nubuz.desertblossomshop.com/uploads/1/3/2/3/132302842/mugotatekegored.pdfIn PDF document text
    • http://ketoma.spinnakeugundogs.com/uploads/1/3/0/7/130738568/bikuma-ziluxekibafidiz.pdfIn PDF document text
    • http://files.small-product-photography.com/uploads/1/3/1/6/131607866/352168.pdfIn PDF document text
    • http://zozebit.theforesightcoach.com/uploads/1/3/1/4/131453050/7351280.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/1/0429/5242/5631/files/19117826283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/pampered_chef_white_chicken_chili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/dekuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4786/1923/files/case_study_examples_social_work_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/pixamogapuwekex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/bopunakaratonesawugifemos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8584/0803/files/citizenship_test_android_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8384/8093/files/bungen_englisch_simple_present.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0859/7927/files/dejimemedojusubidemima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1325/files/superduper_for_mac.pdfIn PDF document text
    • https://0848a669-747e-40eb-9702-def192a9d3c8.filesusr.com/ugd/45fd81_f9b0eec23e1d4a3cac2188bcc047c3ad.pdf?index=trueIn PDF document text
    • https://10520c0e-9de9-4174-95a4-91d602d6c004.filesusr.com/ugd/0a593f_c7303f1085ca4977b788830e9ad1303e.pdf?index=trueIn 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_off0000926b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x926B 5296 bytes
SHA-256: 9e94030bca7c515cdc3540bea4aefdce331d61470a6fa30137129af3922e1652
font_01_sfnt_off0000a46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA46E 10400 bytes
SHA-256: bc685a630972b0f0eb13aa5c95ed643a89961c84e6272f2e3eb3f79e2756d2d6

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