Malicious PDF — malware analysis report

Static analysis result for SHA-256 955391af4105df7e…

MALICIOUS

PDF

42.8 KB Created: 2020-08-23 01:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 22ed93b6abcaa6a0bba9107544e8c406 SHA-1: 3bfc3684404a47dd2b2c0f868b6dacd0966371db SHA-256: 955391af4105df7ebcccb7148f8eee625b95331cfb197ce8e7f92281198c53b8
242 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'bloatware removal' and the malicious URL. The primary attack pattern involves luring the user to click a link that leads to malicious infrastructure, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=remove+bloatware+android+without+root+2019 In PDF document text
    • http://files.scarboroughresidentialalternatives.ca/uploads/1/3/1/4/131454262/dimebiravud-vitit.pdfIn PDF document text
    • http://nenigig.christhomasguitar.com/uploads/1/3/0/7/130776078/227792f35.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/1/0432/1624/0807/files/40837059823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2023/9519/files/breezin_george_benson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/i_like_me_better_lauv_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3859/6510/files/20610347517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/52182587786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4336/4759/files/52830118643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/pijinax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/zerusuvawokazamareren.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 2

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_off000064a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A6 5668 bytes
SHA-256: d49a672d1892aded1d06658584bf087d178339649629d9a514d876bd4e9df0e3
font_01_sfnt_off000077d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D5 11708 bytes
SHA-256: 107817c84ebb7303582728a402c98b681f50017ebe9d9ceca3e4b128e5a74776

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