Malicious PDF — malware analysis report

Static analysis result for SHA-256 388c9296f286b143…

MALICIOUS

PDF

40.8 KB Created: 2020-08-17 17:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c526b9a255fb98e03e4aba173f7b61b SHA-1: 8cf46bd6e104bbd12348dc0310f45b23e522d93c SHA-256: 388c9296f286b143973c002a75df4f4a6ffee5b6260f93ca9b22e742dfb36c06
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=firewall+windows++free'. This URL, combined with the document body's deceptive text about a 'Firewall windows free', strongly suggests a phishing or malware lure. The presence of a PDF link farm heuristic further indicates malicious intent to distribute links, likely to further malicious sites or to manipulate search engine results.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=firewall+windows++free In PDF document text
    • http://dasewe.onceuponatimepartiesal.com/uploads/1/3/0/7/130739655/taluwabi-xofadokevi-nozagovezenaki-bevuxovinasuw.pdfIn PDF document text
    • http://files.adrian-spencer.com/uploads/1/3/1/4/131437318/a65ff2a.pdfIn PDF document text
    • http://files.gabrielstrumpbooks.com/uploads/1/3/1/4/131407901/5932025.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/1/0460/6341/9547/files/ester_formation_from_carboxylic_acid_and_alcohol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/harry_potter_deathly_hallows_google_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8276/6743/files/64265594180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5593/8720/files/2738825174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/69038278677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/zotilumulowebub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0630/files/cool_shoes_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9822/5320/files/diagnostico_diferencial_de_anemia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/watipewukusuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/leguwimerewasitova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6990/6854/files/51032095693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8360/3863/files/7569425204.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_off000062ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AD 4948 bytes
SHA-256: cd2e7caa893d345216f1c05b7ff82195c6e9ce9b1b1b8df008753e0a0d171df0
font_01_sfnt_off0000739f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739F 10272 bytes
SHA-256: 99e15e1ae5f49925251bee4cb62849c14520d01ba5e024ee2e9b8b081b7cfe96

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