Malicious PDF — malware analysis report

Static analysis result for SHA-256 229a18ac27880a04…

MALICIOUS

PDF

54.7 KB Created: 2020-08-11 16:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4b525403ba19ec02754c6a0f6d73202 SHA-1: 13d62c1faada28657dd62fd2e4bbbdcc0a4f60d9 SHA-256: 229a18ac27880a0416aa1723e5b9f546f7b719428ec6eb32342e82ee8d9bb110
152 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which likely serves as a lure. Another critical heuristic detected a large PDF link farm, with many links pointing to Shopify-hosted PDF files, suggesting a potential SEO manipulation or content distribution scheme. The presence of these links indicates a probable attempt to redirect users to malicious sites or distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=zodiac+signs+months+and+meanings+pdf
    • http://files.nileswesttheatre.com/uploads/1/3/1/0/131071037/9c68f1b458.pdf
    • http://files.wingecarribeehealthassociationformen.org/uploads/1/3/1/4/131452838/lapeberejekex.pdf
    • http://files.erdyl.com/uploads/1/3/2/7/132712198/murubewut.pdf
    • http://files.mollygazay.com/uploads/1/3/1/3/131379246/4d04b6f04.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7207/files/kubezunotipoxelaxeripolud.pdf
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/writing_academic_english_4th.pdf
    • https://cdn.shopify.com/s/files/1/0433/4803/3689/files/c_est_pas_sorcier_les_gaulois.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/69978944276.pdf
    • https://cdn.shopify.com/s/files/1/0434/2297/4117/files/nejogididon.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/angle_between_two_3d_vectors.pdf
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/xusozasaguvez.pdf
    • https://cdn.shopify.com/s/files/1/0434/4256/9368/files/rozusijofeviselodu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8802/files/dujotumumowuzelakufozor.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/runaway_bon_jovi_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/8064/5782/files/53776880760.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/96845513174.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/76272555663.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/pakofaguwetiwujekaliku.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/modibupakeginozome.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082d2.bin
92460acaab72d2a2a963e18f4d0fa1582e67aecac56baaff16dcb1d7fade4bb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D2 5396 bytes
font_01_sfnt_off00009512.bin
2116b232880772929f7cdf44ecc03d3faf69fb54f983e894bcb929ea94e2ffb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9512 10040 bytes
font_02_sfnt_off0000b7a0.bin
21d2c517cc0d2781f643886744ab2248bbe8d92ed1ab736cc2ad748918d5c6f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A0 16296 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.