Malicious PDF — malware analysis report

Static analysis result for SHA-256 fadfce42259fac8b…

MALICIOUS

PDF

43.9 KB Created: 2020-08-15 03:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ec71f649607f87f1ace62855f3c1721 SHA-1: adb35585b2f90019336195ef9f1d96e691843f56 SHA-256: fadfce42259fac8bf685d24295a0c2229edec6d1d02057623bf35641c240c0ea
242 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify, likely to manipulate search engine results. One of these links, https://ttraff.com/pify?keyword=excel+invoice+template+with+logo, is identified as a malicious redirector. The document body, though heavily corrupted, contains language suggesting an invoice lure, which is consistent with the heuristic firing for SE_INVOICE_LURE. The primary attack pattern involves tricking the user into clicking a malicious link disguised as a useful document.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=excel+invoice+template+with+logo In PDF document text
    • http://files.shaakirasharifeducationalpsychologyandtechnologyprogram.com/uploads/1/3/0/7/130739463/pasos.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/1/0449/0670/9159/files/2nd_grade_math_challenge_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/tik_tok_whistle_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12410546401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/12734021498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/piriformis_muscle_stretches_while_pregnant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1936/9639/files/lasij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/67248210499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6017/4754/files/zenovawizuvuvudaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3508/1374/files/data_communication_and_networking_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8638/4023/files/cambridge_placement_test_for_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/49793981619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/68680495879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/pakalujepisixizipaki.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE4 5252 bytes
SHA-256: b5f49687fe8f355daedacaf2d9e7c38f5216b481d53d2e849c7d22a7715b9f36
font_01_sfnt_off00007fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAD 10332 bytes
SHA-256: da4684f89a36490de994f95b5161e497832635e2c0d3dda02318eb091e692a6a