Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6dc76438a93503…

MALICIOUS

PDF

35.1 KB Created: 2020-08-28 12:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37f7dd63461e327e9401b86966c626eb SHA-1: 073873df428f479dc0f6224ab0b956bac684d1b5 SHA-256: 5a6dc76438a93503ad98bb7da6bf990a31cbed861081d0a18ae834bcaf2200fb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=the+power+of+broke+free+download'. This redirector is likely used to obscure the final malicious destination and deliver a payload. The document body and heuristics suggest a phishing lure related to 'free download'. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly indicate a malicious intent to lead the user to harmful 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=the+power+of+broke+free+download In PDF document text
    • http://files.clarencelam.com/uploads/1/3/1/4/131484328/1908241.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/1/0437/6847/9893/files/vocabulary_list_for_3rd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6197/6994/files/64134107083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/contour_storyteller_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/destroy_all_humans_ps2_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2011/4331/files/megagebowuxosezanubakud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/anamorphic_format_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7978/5891/files/quick_heal_secure_browser_free_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/2022661058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9381/9541/files/kivoporixavuwagew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/gidizapeposil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8820/7255/files/cisco_ccna_2_packet_tracer_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0537/7688/files/lizinadego.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
🗂 Part of campaign: clarencelam.com 3 samples

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_off00004db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB6 5196 bytes
SHA-256: fc52894e3e81cff8cf697a2f4576ce338b33f7feb963e62f3763d5922ae9a23b
font_01_sfnt_off00005f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6D 9612 bytes
SHA-256: 9d970f916a1fc2c9bf50269a18e32de795adb3988b4e1fac7f72aea5d1ab7ac1

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