Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f4861e7968075f1…

MALICIOUS

PDF

55.2 KB Created: 2020-08-04 11:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b69e5c0fc11f1255a43cdff2c74d26b8 SHA-1: c3ec7d1b85d39db417c07c625d3bbe6337405a29 SHA-256: 0f4861e7968075f13062558d48a797abc61407a7d4904bc9a1df87a7af672085
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to the malicious URL and other Shopify links, suggesting a link farm or SEO manipulation tactic to drive traffic to malicious infrastructure. No scripts were extracted, but the presence of malicious links is sufficient evidence of a phishing or redirection attempt.

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.com/pify?keyword=bernoulli+equation+maths+pdf
    • http://files.spiritfireshaman.com/uploads/1/3/2/7/132741382/lotizakisubanas-xutov-tijonopimubepal.pdf
    • http://files.martigraceashby.com/uploads/1/3/1/4/131438216/puzazu.pdf
    • http://files.kristinsurak.com/uploads/1/3/1/3/131383319/femoj.pdf
    • http://files.robertacarr.com/uploads/1/3/2/7/132740871/3662152.pdf
    • http://sisolaso.niclasfransson.com/uploads/1/3/0/7/130739835/sarazavole-rotutot-tureguv-juditonited.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/24483912258.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/zusexupajosewo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/el_caminante_y_su_sombra_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0436/5074/4478/files/6201639847.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/mibivaril.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/jamosoforovavuwovafatur.pdf
    • https://cdn.shopify.com/s/files/1/0438/1707/4850/files/gozedopibedaterorosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/java_jdk_8.pdf
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/bivobefumukatifatepel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89965927340.pdf
    • https://cdn.shopify.com/s/files/1/0434/0642/6275/files/nawetojufafaxuwaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/8262/6710/files/23254908862.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066bb.bin
e04cfe7e9b463f3c34ad59a79dcc57ba2195eb5760a8ffbba07a6267c1bc0cde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BB 6832 bytes
font_01_sfnt_off0000780a.bin
d1e5df6e264e899c42d6f00a31f73a9141a20300f45ff8c00435f93ffe44e036		 pdf-font-stream PDF embedded font (sfnt) at offset 0x780A 5456 bytes
font_02_sfnt_off00008a65.bin
87f4dc9fc1dc24012f317389c1eb0370a9430534078bbe5b7f9ba8065666d42c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A65 1956 bytes
font_03_sfnt_off00009386.bin
bb5d280d95882deb362aa244d001c2e27a6bd47593ff2097514717ff2c7e5349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9386 10716 bytes
font_04_sfnt_off0000b842.bin
d26fdce492fb9e8c49f527e3a91555393c735dd4d56e489be838b86a3f7c22b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB842 16488 bytes

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